GLASS SUBSTRATE WITH HOLDING PART, HEAT TREATMENT METHOD FOR GLASS SUBSTRATE, AND GLASS SUBSTRATE SUPPORT UNIT

摘要

PROBLEM TO BE SOLVED: To provide a glass substrate capable of supporting a glass substrate of a rectangular flat plate shape without adding any unnecessary stress, when the glass substrate is subjected to a heat treatment, and effectively preventing any deformation, strain or flaw in the glass substrate, and to provide a heat treatment method and a glass substrate support unit.SOLUTION: A glass substrate 1 has its marginal part 10a formed with a holding part 11 thicker than the remaining region, and is subjected to a heat treatment while the glass substrate 1 is held through the holding part 11. After the end of the heat treatment, a predetermined area containing the holding part 11 is removed from the glass substrate 1.